Electromagnetic Lock with Strong Anti-impact Ability

Abstract

The present invention resolves the problem that a lockpin is easy to broken in current electromagnetic lock, find a good structure for greatly improving the capability of the electromagnetic lock against a very strong impact from outside. The new structure can transfer the outside force to a reinforced rib on the lock shell. The new electromagnetic lock comprises a lock shell ( 1 ), an arc style bolt ( 2 ), an electromagnet ( 3 ), an implemental part ( 4 ) of the electromagnet ( 3 ) connecting with one end of the lockpin ( 5 ), a unlock slot ( 7 ) is on the lockpin ( 5 ), a slipping block ( 8 ) is installed in a slipping slot against the lockpin, other end of this slipping block is against the bolt tail ( 202 ) of the arc style bolt. A second spring ( 20 ) is installed between the bottom of the slipping slot and the slipping block ( 8 ), the second spring ( 20 ) forces the slipping block ( 8 ) to contact the bolt tail ( 202 ) of arc style bolt. The structure of the new electromagnetic lock is simple, the manufacturing process is easy, and the new electromagnetic lock can resist relatively stronger wallop.

1 . An electromagnetic lock with strong anti-impact ability comprising:
 a lock shell, an arc style bolt, an electromagnet, a arc style bolt Pivoted installed in the lock shell, its bolt head being outside of the lock shell, the electromagnet being installed inside the lock shell;   a implemental part of the electromagnet being against one end of a lockpin, other end of the lockpin being against a third spring, the lockpin and the third spring being restricted in a slot on the lock shell;   a slipping block being installed inside a slipping slot of the lock shell and being vertical to the lockpin, two ends of the slipping block being against the lockpin and a bolt tail of the arc style bolt respectively;   a second spring located the end of the slipping slot, the second spring being against the slipping block to force it to contact the bolt tail of the arc style bolt.   
   
   
       2 . The electromagnetic lock of  claim 1 , wherein further comprises a reinforced rib near a touch-point of the slipping block with the arc style bolt for resisting the impact from outside. 
   
   
       3 . The electromagnetic lock of  claim 1 , wherein further comprises a supporting block for weakening the impact from outside to the lockpin, the supporting block is vertical to the slipping block and near the reinforced rib, two ends of the supporting block being respectively against the slipping block and a fourth spring based on the lock shell. 
   
   
       4 . The electromagnetic lock of  claim 2 , wherein the slipping block has an anti-impact-incline near the touch-point of the slipping block and the arc style bolt, the reinforced rib has an impact-sustainable-incline being opposite to the anti-impact-incline. 
   
   
       5 . The electromagnetic lock of  claim 3 , wherein the slipping block has an anti-impact-incline near the connection point of the slipping block and the arc style bolt, the reinforced rib has an impact-sustainable-incline being opposite to the anti-impact-incline. 
   
   
       6 . The electromagnetic locks of  claim 1 , wherein magnets of the electromagnet are permanent magnets.